Responsibilities of the installing contractor for sprinkler systems and private fire service mains are specified in NFPA 13, Standard for the Installation of Sprinkler Systems:
Notify the AHJ (A): The contractor must inform the AHJ about the date and time of acceptance tests.
Perform all required acceptance tests (B): Contractors are responsible for conducting these tests to ensure the system meets NFPA standards.
Complete and sign test certificates (D): The contractor must certify the materials and tests by completing and signing the appropriate documents.
Perform annual tests on all existing systems (C): This is not the contractor's responsibility. Annual testing and maintenance are typically handled by the building owner or their representative under NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems.
Reference:
NFPA 13, Chapter 24: Responsibilities of the installing contractor.
NFPA 25: Maintenance and testing responsibilities for existing systems.